You would need more intelligence than you possess. And I am pleased you think my claim is absolute fairy dusted b/s. I wouldn't want it any other way.
But to put it simply, ratings based handicap racing in a jurisdiction over a large sample will follow a consistent pattern of outcomes related to weight (if there is no contrived minimum weight). In a decent jurisdiction, that line will be level as all weights will produce the same relative number of winners across the weight scale. In a not so good jurisdiction, the line will still be linear but not level.
Since many jurisdictions run handicap races with minimum weights, that results in horses carrying greater weight than the handicap process would have them carry if there was no minimum. That minimum weight causes the line to be skewed at that point as it drops away relative to the line achieved at all the other higher weights.
Those horses weighted to carry above their true relative weight, can then be assessed as to what impact the extra weight had on their performance ('generally' across the sample) until such time as the linear line above the minimum weight remains linear across all the weight groups that should have been allocated.
Funnily enough, you can do this for jurisdictions such as all of Australia and NZ and get the same result. What a surprise. Maybe my sample of over 5 million horse starts isn't big enough. Still, I'm pretty sure it is big enough to know that 1kg = 3/4L is garbage 'generally'.
That is it, at a basic level of which you still won't understand. The same way you don't understand why all your ideas are flawed. You simply can't comprehend these things.
You'll attempt some stupid response because of your ignorance. I'd be surprised if you didn't. Simply, you are not the brightest.